Application of matched digital filters to noisy fringe-patterns from complex wavefronts

Jesus Caum; J. Arasa; Santiago Royo; M. Ares

doi:10.1117/12.612835

13 June 2005 Application of matched digital filters to noisy fringe-patterns from complex wavefronts

Jesus Caum, J. Arasa, Santiago Royo, M. Ares

Proceedings Volume 5856, Optical Measurement Systems for Industrial Inspection IV; (2005) https://doi.org/10.1117/12.612835
Event: Optical Metrology, 2005, Munich, Germany

Abstract

A new technique for processing of noisy fringe patterns with complex fringe shapes is presented . The technique is based in exploiting the capabilities of digital filters, treating the fringe-pattern as a signal to be processed. The main parameters required for designing the filter, and the application of the design methodology to a particular experimental fringe pattern are described in detail. To conclude, the designed filter is applied to experimental noisy fringe-patterns both from complex and simple wavefronts, which are processed without a single change in the parameters of the algorithms. The procedure is completely general, with a very small computational cost, and may be extended to any noisy fringe-pattern to be processed given the fringes are still visible.

Citation Download Citation

Jesus Caum, J. Arasa, Santiago Royo, and M. Ares "Application of matched digital filters to noisy fringe-patterns from complex wavefronts", Proc. SPIE 5856, Optical Measurement Systems for Industrial Inspection IV, (13 June 2005); https://doi.org/10.1117/12.612835

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